Deep Cycle Batteries

[Floater]

If your panel is 40v and you're charging at 14.4v the extra 25.6v difference is just being thrown away. MPPT can utilize all that extra voltage and turn it into charging current. One of them would give you about 1.5X more charge everyday.

Yep, I need to try and come up with the funds to pick one up. For now, what I have works and is a total blessing, but I would really like to fix the bugs and make it as efficient as possible.